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JPS5267909A - Echo cancelling unit - Google Patents

Echo cancelling unit

Info

Publication number
JPS5267909A
JPS5267909AJP51141375AJP14137576AJPS5267909AJP S5267909 AJPS5267909 AJP S5267909AJP 51141375 AJP51141375 AJP 51141375AJP 14137576 AJP14137576 AJP 14137576AJP S5267909 AJPS5267909 AJP S5267909A
Authority
JP
Japan
Prior art keywords
echo cancelling
cancelling unit
unit
echo
cancelling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP51141375A
Other languages
Japanese (ja)
Other versions
JPS5755255B2 (en
Inventor
Hiyuugoo Miyuuraa Kaato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Western Electric Co IncfiledCriticalWestern Electric Co Inc
Publication of JPS5267909ApublicationCriticalpatent/JPS5267909A/en
Publication of JPS5755255B2publicationCriticalpatent/JPS5755255B2/ja
Grantedlegal-statusCriticalCurrent

Links

Classifications

Landscapes

JP51141375A1975-11-281976-11-26Echo cancelling unitGrantedJPS5267909A (en)

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
US05/636,297US4087654A (en)1975-11-281975-11-28Echo canceller for two-wire full duplex data transmission

Publications (2)

Publication NumberPublication Date
JPS5267909Atrue JPS5267909A (en)1977-06-06
JPS5755255B2 JPS5755255B2 (en)1982-11-22

Family

ID=24551288

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP51141375AGrantedJPS5267909A (en)1975-11-281976-11-26Echo cancelling unit

Country Status (11)

CountryLink
US (1)US4087654A (en)
JP (1)JPS5267909A (en)
AU (1)AU501195B2 (en)
BE (1)BE848695A (en)
CA (1)CA1063744A (en)
DE (1)DE2653965C3 (en)
FR (1)FR2333389A1 (en)
GB (1)GB1561485A (en)
IT (1)IT1064481B (en)
NL (1)NL185643C (en)
SE (1)SE409933B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5566161A (en)*1978-11-131980-05-19Nippon Telegr & Teleph Corp <Ntt>Two-wire system full double digital transmission device
JPS58171138A (en)*1982-04-011983-10-07Nec CorpOptical transmission and reception system
JPH0388433A (en)*1989-06-271991-04-12Nec CorpEcho canceller

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
NL170688C (en)*1976-06-281982-12-01Philips Nv DEVICE FOR SIMULTANEOUS TWO WAY DATA TRANSMISSION ON TWO WIRE CONNECTIONS.
US4074086A (en)*1976-09-071978-02-14Bell Telephone Laboratories, IncorporatedJoint adaptive echo canceller and equalizer for two-wire full-duplex data transmission
USRE31253E (en)*1976-09-071983-05-24Bell Telephone Laboratories, IncorporatedEcho cancellation in two-wire, two-way data transmission systems
AU514263B2 (en)*1977-01-171981-01-29T.R.T.Digital echo canceller
NO140648C (en)*1977-10-241983-03-29Elektrisk Bureau As DIRECTIVE CONNECTOR.
NL7902093A (en)*1979-03-161980-09-18Koninkl Philips Electronics Nv SELF-ADJUSTING FILTER WITH A DELAY CIRCUIT.
FR2460075B1 (en)*1979-06-221988-12-09Cit Alcatel ADAPTIVE ECHO CANCELLER FOR DUPLEX DATA TRANSMISSION
FR2475322A1 (en)*1980-02-011981-08-07Trt Telecom Radio Electr ECHO CANCER WITH SIMPLIFIED CALCULATION CIRCUITS
US4535206A (en)*1980-04-091985-08-13At&T Bell LaboratoriesEcho cancellation in two-wire full-duplex data transmission with estimation of far-end data components
CA1175521A (en)*1980-04-091984-10-02David D. FalconerEcho cancellation in two-wire full-duplex data transmission with estimation of far-end data components
DE3120434A1 (en)*1981-05-221982-12-16Standard Elektrik Lorenz Ag, 7000 Stuttgart ADAPTIVE ECHOCOMPENSATION DEVICE FOR DIGITAL DUPLEX TRANSFER ON TWO-WIRE CABLES
US4464545A (en)*1981-07-131984-08-07Bell Telephone Laboratories, IncorporatedEcho canceller
DE3212056A1 (en)*1982-04-011984-02-09ANT Nachrichtentechnik GmbH, 7150 Backnang METHOD AND CIRCUIT ARRANGEMENT FOR CARRYING OUT THE METHOD FOR ADAPTIVE ECHO ERASE IN TERMINALS FOR DUPLEX DATA TRANSMISSION OVER TWO-WIRE CABLES
CH660655A5 (en)*1983-09-231987-05-15Siemens Ag Albis DIGITAL FORK ARRANGEMENT.
EP0139814A3 (en)*1983-09-301986-07-30Siemens-Albis AktiengesellschaftActive equalizer circuit
US4715064A (en)*1984-06-221987-12-22Ncr CorporationAdaptive hybrid circuit
US4885755A (en)*1985-04-101989-12-05Canon Kabushiki KaishaMethod and apparatus for data communication
US4636586A (en)*1985-09-201987-01-13Rca CorporationSpeakerphone with adaptive cancellation of room echoes
AU584488B2 (en)*1985-12-241989-05-25Telstra Corporation LimitedMethod of initial synchronisation for full duplex digital transmission
US4760596A (en)*1986-02-251988-07-26Gte Laboratories IncorporatedAdaptive echo cancellation and equalization system signal processor and method therefor
US4742510A (en)*1986-04-041988-05-03Massachusetts Institute Of TechnologyNear and far echo canceller for data communications
US4823382A (en)*1986-10-011989-04-18Racal Data Communications Inc.Echo canceller with dynamically positioned adaptive filter taps
US4805215A (en)*1986-10-011989-02-14Racal Data Communications Inc.Adaptive echo canceller with sparse dynamically positioned taps
US4995030A (en)*1988-02-011991-02-19Memotec Datacom, Inc.Far end echo cancellation method and apparatus
US4969144A (en)*1989-01-031990-11-06Universal Data Systems, Inc.Adaptive passband echo canceller
JPH0748681B2 (en)*1989-02-231995-05-24日本電気株式会社 Echo canceller coefficient control method
US5353348A (en)*1993-05-141994-10-04Jrc International, Inc.Double echo cancelling system
US5471527A (en)1993-12-021995-11-28Dsc Communications CorporationVoice enhancement system and method
US6021158A (en)*1996-05-092000-02-01Texas Instruments IncorporatedHybrid wireless wire-line network integration and management
US6044107A (en)*1996-05-092000-03-28Texas Instruments IncorporatedMethod for interoperability of a T1E1.4 compliant ADSL modem and a simpler modem
US5970088A (en)*1996-05-091999-10-19Texas Instruments IncorporatedReverse channel next cancellation for MDSL modem pool
US5910970A (en)*1996-05-091999-06-08Texas Instruments IncorporatedMDSL host interface requirement specification
US6002722A (en)*1996-05-091999-12-14Texas Instruments IncorporatedMultimode digital modem
US6055268A (en)*1996-05-092000-04-25Texas Instruments IncorporatedMultimode digital modem
US5987061A (en)*1996-05-091999-11-16Texas Instruments IncorporatedModem initialization process for line code and rate selection in DSL data communication
US6038251A (en)*1996-05-092000-03-14Texas Instruments IncorporatedDirect equalization method
US5999563A (en)*1996-05-091999-12-07Texas Instruments IncorporatedRate negotiation for variable-rate digital subscriber line signaling
US6137839A (en)*1996-05-092000-10-24Texas Instruments IncorporatedVariable scaling of 16-bit fixed point fast fourier forward and inverse transforms to improve precision for implementation of discrete multitone for asymmetric digital subscriber loops
US5809069A (en)*1996-07-191998-09-15Texas Instruments IncorporatedFrequency-domain carrierless AM-PM demodulator
US6160790A (en)*1996-12-312000-12-12Paradyne CorporationCrosstalk canceller system and method
US6667955B1 (en)*1998-08-282003-12-23International Business Machines CorporationSwitching fabric system having at least one subsystem including switch core elements arranged in port expansion architecture
US7027537B1 (en)*1999-03-052006-04-11The Board Of Trustees Of The Leland Stanford Junior UniversityIterative multi-user detection
DE19937505C2 (en)*1999-08-092001-07-26Infineon Technologies Ag Reception method and receiver arrangement for a duplex transmission system
US6788251B2 (en)*2000-05-032004-09-07Thales Navigation, Inc.Method and apparatus for interference reduction in a positioning system
US7194037B1 (en)*2000-05-232007-03-20Marvell International Ltd.Active replica transformer hybrid
DE10247208A1 (en)*2002-10-102004-04-22Infineon Technologies AgBridge-circuit arrangement for echo suppression in communication devices e.g. for xDSL-transmission systems, includes variable simulating device for simulating at least one circuit section of bridge branch
US7047343B2 (en)*2003-11-262006-05-16Dell Products L.P.System and method for communication of keyboard and touchpad inputs as HID packets embedded on a SMBus
US7639598B2 (en)*2006-01-312009-12-29Szabolcs SovenyiSimultaneous full-duplex communication over a single electrical conductor
TWI339513B (en)*2006-12-212011-03-21Realtek Semiconductor CorpPassive echo cancellation device and signal transmission method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US3499999A (en)*1966-10-311970-03-10Bell Telephone Labor IncClosed loop adaptive echo canceller using generalized filter networks
US3500000A (en)*1966-10-311970-03-10Myldred P KellySelf-adaptive echo canceller
USRE27250E (en)1969-09-181971-12-21Ojccuj
US3732410A (en)*1969-12-221973-05-08Postmaster Department Res LaboSelf adaptive filter and control circuit therefor
US3597541A (en)*1969-12-231971-08-03Sylvania Electric ProdDecision-directed adapted equalizer circuit
GB1434239A (en)*1972-08-101976-05-05Siemens AgEcho cancellers
FR2272544B1 (en)*1974-05-241977-03-11Cit Alcatel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5566161A (en)*1978-11-131980-05-19Nippon Telegr & Teleph Corp <Ntt>Two-wire system full double digital transmission device
JPS58171138A (en)*1982-04-011983-10-07Nec CorpOptical transmission and reception system
JPH0388433A (en)*1989-06-271991-04-12Nec CorpEcho canceller

Also Published As

Publication numberPublication date
SE7612469L (en)1977-05-29
NL7613228A (en)1977-06-01
AU1988576A (en)1978-06-01
FR2333389A1 (en)1977-06-24
IT1064481B (en)1985-02-18
US4087654A (en)1978-05-02
BE848695A (en)1977-03-16
GB1561485A (en)1980-02-20
JPS5755255B2 (en)1982-11-22
SE409933B (en)1979-09-10
NL185643C (en)1990-06-01
DE2653965C3 (en)1979-08-16
CA1063744A (en)1979-10-02
AU501195B2 (en)1979-06-14
DE2653965B2 (en)1978-11-23
DE2653965A1 (en)1977-06-02
FR2333389B1 (en)1981-01-02
NL185643B (en)1990-01-02

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